wyvern

noun

1. A draconian creature possessing wings, only two legs and usually a barbed tail.

   “[I]f (notwithstanding his obligations to the three ermines passant) he sometimes cursed in his heart the jargon of heraldry, its griffins, its moldwarps, its wyverns, and its dragons, with all the bitterness of Hotspur himself, there were moments when these communications interested his fancy and rewarded his attention.”

   “Notions of freedom are tied up in drink / Our ideal life contains a tavern / Where man may sit and talk of or just think / All without fear of the nighted wyvern, / Or yet another tavern where it appears.”

   “Above the shield was the well-known Midland crest of a legless wyvern (a wyvern normally has two legs).”